A can do a piece of work in 24 days and B can do it in 80 days. B works alone for 2 days and A works alone on the 3rd day. This process continues till the work is completed. In how many days will the work be completed?
Answer & explanation
Correct answer: option 2
A = 24 days, B = 80 days,
⇒ B works alone for 2 days and A works alone on the 3rd day, and this process continues,
1st day = 3 units
2nd day = 3 units,
3rd day = 10 units,
Every 3 days, 16 units of work is completed,
Therefore in 45 days, 240 units of work will be completed.